Drometrizole CAS 2440-22-4


Basic Info

Product Name:


Other Names:




Place of Origin:

Shandong, China

Brand Name:

Zhishang Chemical


Additives for Plastic


White powder




Cool Dry Place



Chemical Properties:

Drometrizole is an ultraviolet light absorber (UVA) of the hydroxyphenyl benzotriazole class, imparting good light stability to a wide variety of polymers.


  1. Drometrizole is an intermediate reactant in the synthesis of UV light absorbers for polyester fibers.An ultraviolet light absorber for stabilizing plastics and other organic materials against discoloration and deterioration.2(2-Hydroxy-5-methylphenyl)benzotriazol is an UV adsorber for use in plastics, cosmetics, dental materials, acrylic materials, dyes, etc.
  2. Ultraviolet absorber UV-P, Chinese alias is 2-(2′-hydroxy-5′-methylphenyl) benzotriazole; Crestrozole; Ultraviolet absorber UV-P; Ultraviolet absorber UV-71; 2-(2-Hydroxy-5-methylphenyl)benzotriazole. Drometrizole as ultraviolet absorber for polyester, polystyrene, acrylic resin, polyvinyl chloride and other plastics, fibers and coatings.
  3. Epoxy resin, fiber resin, etc. This product hardly absorbs visible light, and is especially suitable for colorless, transparent and colored products. The general dosage is 0.1-0.5% in thin products and 0.05-0.2% in thick products. This product is allowed to be Drometrizole for plastic products in contact with food.
  4. The ultraviolet absorber uv-329 is non-toxic, non-flammable, non-explosive, non-corrosive, and has good storage stability. Drometrizole is packed in cardboard drum lined with plastic bag, net weight is 25kg and 50kg. Drometrizolecan also be designed according to customer requirements.
  5. The reason why ultraviolet absorbers can absorb ultraviolet light is due to the structure of the conjugated π-electron system in the molecules of this type of compound and the structure that can move hydrogen atoms. There are also only the first part.
    Ultraviolet absorbers contain at least one ortho-hydroxyphenyl substituent in their structural molecules. In this type of compound, a chelate ring is formed by ortho-hydroxyl and nitrogen or oxygen atoms. After absorbing ultraviolet rays, the hydrogen bond breaks and molecular isomerism occurs. , The intra-molecular structure undergoes thermal vibration, the hydrogen bond is broken, the chelating ring is opened, and the intra-molecular structure changes, so that harmful ultraviolet light is turned into harmless heat and released, thereby protecting the material.
    In this process, the chelating ring formed in the molecule is the key to Drometrizoles ability to absorb ultraviolet light. The energy sensitive range of opening this ring is exactly the ultraviolet energy range of 290-400nm wavelength.
    In addition, as an ultraviolet absorber, Drometrizolemust be able to not undergo photochemical reactions under the action of ultraviolet or visible light; Drometrizolehas good stability to chemicals and water, and has good thermal stability; low volatility; compatible with polymer materials It has good properties and is not extracted by solvents.

About Us

The production base is located in Zhangqiu chemical industry park and Tai’an high-tech chemical industry park. laboratory and workshop in strict accordance with the GMP standard and the product fit national ISO9001 and ISO2000 standards.

“Zhishang” products are exported to Europe, North and South America, the Middle East, Asia Pacific and Africa area, so as to establish a long-term and stable cooperation relationship with customer in the world.

Company Info
  • Business Type: Manufacturer
  • Product Range: Additive , Chemical Auxiliary & Catalyst , Organic Chemicals
  • Products/Service: Organic Intermediate,Inorganic Chemistry, APIs, Dyestuffs And Pigments, Fragrance And Spices, Food Additives
  • Total Employees: 51~100
  • Capital (Million US $): 10000000RMB
  • Year Established: 2016
Production Capacity
  • No. of Production Lines : 8
  • No. of QC Staff : 5 -10 People
  • OEM Services Provided : yes
  • Factory Size (Sq.meters) : 3,000-5,000 square meters
  • Certificate: ISO9001 , CE , GMP , API , MSDS
  • Factory Location : Diao Town Industry Park, Zhangqiu City, Jinan City, Shandong Province, China.


Pre-Sales Service

* Prompt reply and 24 hours online, professional team to provide best price and high quality product.

* Sample testing support.

* Every batch of products will be tested to ensureits quality.

*The packing also can be according the customers` requirment.

*Any inquiries will be replied within 24 hours.

*we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your markets have any special requirements, let us know.


After-Sales Service

*The fact of logistics information monitoring.

* Any questions about the product can be consulted at any time.

*Product has any problem can return.


Do you accept sample order?

We will make samples before mass production, and after sample approved, we’ll begin mass production. Doing 100% inspection during production, then do random inspection before packing.



You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.

What’s your MOQ?

Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.

Do you supply product report?

Yes. We’ll give you product analysis report before shipping.

  Is there a discount?

Different quantity has different discount.


1. ≤50kg, Express delivery recommended, usually called as DDU service;

2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;

3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;

4. For high value products, please select air shipping and express delivery for safe.

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